The Patent Finder

Walter AG

42 patents currently held · Updated Nov 14, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
1
Ending by 2030
Aug 2030
Next term end

When these terms end

Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
  • 1 fee due Jan 9, 2027
    The maintenance fee for Parting blade and grooving and parting-off tool (US 10,343,222) comes due Jan 9, 2027. Unpaid by Jul 9, 2027, it lapses early.
  • 2 fees due Mar 10 to 12, 2027 · next Mar 10
  • 1 fee due May 26, 2027
    The maintenance fee for Tool with TiAlCrSiN PVD coating (US 10,487,388) comes due May 26, 2027. Unpaid by Nov 26, 2027, it lapses early.
  • 1 fee due Jun 8, 2027
    The maintenance fee for Grain boundary engineered alpha-alumina coated cutting tool (US 9,206,510) comes due Jun 8, 2027. Unpaid by Dec 8, 2027, it lapses early.
  • 2 fees due Jul 2 to 19, 2027 · next Jul 2
  • 1 fee due Oct 14, 2027
    The maintenance fee for Solid-carbide end milling cutter having a TiAlN—ZrN coating (US 10,619,236) comes due Oct 14, 2027. Unpaid by Apr 14, 2028, it lapses early.
  • 1 fee due Nov 10, 2027
    The maintenance fee for Target for arc processes (US 9,334,558) comes due Nov 10, 2027. Unpaid by May 10, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

  • 2 of the patents on this record were granted since Aug 16, 2026

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
PatentTitleStatus Expires Confidence
US 8,691,378Cutting tool
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,858,666Tool coating
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,980,446PVD Hybrid Method for Depositing Mixed Crystal Layers
In force
 · High confidence
In forceHigh confidence
US 9,028,954Cutting tool with multi-layer coating
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,457,409Indexable cutting insert and indexable cutting insert holder
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,206,510Grain boundary engineered alpha-alumina coated cutting tool
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,238,267Cutting insert and method for production thereof
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,334,558Target for arc processes
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,476,114TiAlN-coated tool
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,539,656Insert and clamping holder having four-point contacts
In force
 · From the USPTO record
In forceFrom the USPTO record
10 of 42 patents shown.
Pro members see all 42.
Pro members: see all 42 patents
Also on record, not counted in the 42: 35 lapsed for an unpaid fee · 27 ended at full term. List them

Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

Published applications

US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.

13 pending · 1 abandoned · 14 no status recorded

List them

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited